Lua APA (7ú heag.)

Howell, D. C. (1987). Statistical methods for psychology (Second edition.). Duxbury Press.

Lua i Stíl Chicago (17ú heag.)

Howell, David C. Statistical Methods for Psychology. Second edition. Boston: Duxbury Press, 1987.

Lua MLA (8ú heag.)

Howell, David C. Statistical Methods for Psychology. Second edition. Duxbury Press, 1987.

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